Need help practice problem

03) A 1.5-mol sample of helium gas initially at 20 C, and 0.500 atm is compressed isothermally to 1.20 atm. Noting that the helium behaves as an ideal gas, calculate: a) the final volume of the gas, b) the work done on the gas c) The change in the internal energy of the gas during the process. e) the amount of heat transferred to the gas